250 MHz, Voltage Output,
4-Quadrant Multiplier
AD835 Data Sheet
FEATURES FUNCTIONAL BLOCK DIAGRAM Simple: basic function is W = XY + Z
Complete: minimal external components required
Very fast: Settles to 0.1% of full scale (FS) in 20 ns
DC-coupled voltage output simplifies use
High differential input impedance X, Y, and Z inputs
Low multiplier noise: 50 nV/√Hz X1 AD835 X = X1 – X2 X2
XY
+ XY + Z X1 W OUTPUT + Y2 Y = Y1 – Y2
Z INPUT APPLICATIONS 00883-001 Y1 Figure 1. Very fast multiplication, division, squaring
Wideband modulation and demodulation
Phase detection and measurement
Sinusoidal frequency doubling
Video gain control and keying
Voltage-controlled amplifiers and filters GENERAL DESCRIPTION PRODUCT HIGHLIGHTS The AD835 is a complete four-quadrant, voltage output analog
multiplier, fabricated on an advanced dielectrically isolated
complementary bipolar process. It generates the linear product
of its X and Y voltage inputs with a −3 dB output bandwidth of
250 MHz (a small signal rise time of 1 ns). Full-scale (−1 V to
+1 V) rise to fall times are 2.5 ns (with a standard RL of 150 Ω),
and the settling time to 0.1% under the same conditions is …
